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Japanese Journal of Applied Physics

Photon Antibunching in the Emission from a Single Organic Dye Nanocrystal

Sadahiro Masuo, Akito Masuhara, Takeaki Akashi, Mai Muranushi, Shinjiro Machida, Hitoshi Kasai, Hachiro Nakanishi, Hidetoshi Oikawa, Akira Itaya

Published Mar 16, 2007• 28 citations

Abstract

We demonstrated that the emission from a single organic nanocrystal consisting of organic dye molecules shows photon antibunching. That is, an assembling structure consisting of many chromophores can also be made to behave as a single-photon source by controlling the size. We found that most of single nanocrystals within a size range from 35 to 85 nm show photon antibunching even when more than one exciton in a crystal is generated by an intense single excitation pulse. On the other hand, single micrometer-sized crystals showed no antibunching. The present results indicate that molecular assemblies can also be considered as candidates for new single-photon sources.

DOI: 10.1143/jjap.46.l268

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